๐”– Bobbio Scriptorium
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Multifrequency simulation for acoustics

โœ Scribed by S. Kim; W.W. Symes

Book ID
104349934
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
442 KB
Volume
10
Category
Article
ISSN
0893-9659

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โœฆ Synopsis

A frequency-stepping algorithm for solving multifrequency (acoustic) wave propagation is considered. A two-grid method is employed for the problems of single frequency. For high frequency applications, the coarse grid problem is still huge, since one has to choose at least six to eight grid points per wavelength for a stability reason. The coarse grid problem is solved by a nonoverlapping domain decomposition (DD) method. The solution of the former frequency problem is used as the initial guess for the solution of the next larger frequency problem. Such an algorithm turns out to be efficient for multifrequency, as well as single-frequency problems, as shown in numerical results. Also, it is easily parallelizable with a high efficiency.

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